Abstract The hardfill embankments are composed of cemented sand-gravel (CSG) mixtures. In some cases, however, sand and gravel used in the mixture contain fine-grained fraction. This paper aimed to study mechanical behavior microstructure CSG mixtures which base soil contains particles with different plasticity specifications. Various contents kaolinite bentonite were added a sand-cement cement...

Abstract This study is about the use of naturally occurring filtering materials for rainwater treatment drinking water proposal. Crushed gravel, ceramic spheres from natural clays, silica sand and zeolite were used as materials. The mineralogical composition was determined, being illite mordenite major components zeolite, respectively. Naturally simultaneous evaluated on two configuration pilot...

sludge, which is produced as a by-product of all treatment processes, has considerable potential as a fertilizer and soil conditioner. many authorities now discharge the sludge after treatment directly to agricultural land in liquid form, while some others dewater and dry it first. in either case, with proper marketing, it is generally possible for an authority to earn revenue by this means, al...